<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var n = jiShu(parseInt(prompt()),parseInt(prompt()));
        function jiShu(a, b) {
    var c = 0;
    for (var i = a; i <= b; i++) {
        
        for (var j = a; j <= b; j++) {
          
            var res = j + i * 10;
            if (res % 2 != 0) {
                console.log(res);
                c++;
            }
        }
    }
    return c;
}

console.log(n);
    </script>
</body>
</html>